[PHP] How to disable access to the site

How to disable access to the entire site if the cookie is not set ? Can we disable access entirely with some kind of a script which checks before it allows access ? Sunil __ Do You Yahoo!? Make international calls for as low as $.04/minute with

[PHP] Program to check for cookies

Is there a program which will check for cookies before it allows access into the web site ? I want the user to enter the userid/password on a secure web server and pass the cookie information to the regular server. I don't want them to access regular web server without that cookie being enabled

[PHP] Deny access without password to the web site

Hello, How do you let the entire web site be password protected and require a user to use a password when the password entry part is on a secure web server and the other part is on a regular http port. For example when I type http://foo.com it will forward me to https://foo.com for the password